I've used it for 3 weeks now. It looks like I may have new terminal and vellus hairs. It's not magic, so It won't work overnight, and it definitely isn't guaranteed (nor promised) to give you a caveman beard with just 1 bottle. Your best option is to do as told which is to use it at night before bed, and I'd recommend washing your face and dry it before applying... If you see even the slightest improvement at the end of 2 months (8 weeks/ 60 nights), it's probably a good idea to buy another bottle. The stuff is a treatment and should be continued until further notice.

does this work for patchy beards?

Yes! As stated in my review, my husbands beard grows in patchy, and he swears that just by using it for a few days that his beard looks and feels much fuller!

25 years old and all I can grow is sideburns and a goatee. Any other facial hair is straggly and patchy. Can this product counter genetics?

You have to be patient. Keep it clean and it will all patch in. This realy helped me im seeing little hairs growing in where there was none. And everthing just fills ls in. Give it time

will this product cause acne?

Any oil applied over and over will build up and give you acne. This product doesn't really work that well anyways. All you need to grow a beard is a face, and time. Lots of time.